Coming from the scripting world (Ruby) D wasn’t that hard to get started with nor was the learning curve that steep.
I usually prefer to stick with the few languages I already know, but D lang was very fun to play around and build something with, it was kinda worth it because the language was interesting to explore.
The possibilities to meta-program was endless, it’s very powerful.
Something I would like to highlight is that D lang was performant out-the-box, don’t let the GC scare you. D also felt fast to read & write once you got the hang of it.
It also has some interesting concepts like “Turtles all the way down”.
I would highly suggest giving it a try, it’s really an interesting language worth exploring and I think it has matured a lot since.